An ancient Phoenician citadel once stood at the site where Queen Dido first landed, according to legend.

An ancient burial ground believed to have been used for ritual sacrifice.

Massive stele returned to Ethiopia after 70 years in Rome.

An Ethiopian "Jerusalem" featuring a church hewn out of a single rock.

Visit the ancient, mysterious Roman catacombs ... in the Netherlands.

The remains of an ancient Roman city are hidden underneath Bologna's beautiful public library.

An extraordinary mix of Phoenician, Roman, early Christian, and Byzantine ruins beautifully set overlooking the Mediterranean.

An ancient Roman theatre restored to its former glory in the Spanish city of Cartegena.

Remarkably intact Roman stone fortifications have encircled this Spanish city for centuries.

The castle still holds traces of the abandoned Roman fort it was built atop.

Deep in the countryside lie the remains of one of the grandest Roman dwellings in Britain.

A Roman spa buried deep beneath the City of London.

Possibly the world's oldest rug, this Egyptian relic is woven entirely from ancient cat hair and once carried a mummified human foot.

Unbeknownst to most passersby, this marble statue standing outside an office building is a genuine piece of second-century Rome.

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.

This repurposed church offers a more literal way to get closer to the heavens.

The patron saint of spinsters grasps a container of dried blood.

A true Valhalla for cactus and succulent lovers.

Incredible labyrinth of man made caves.

This Torino museum honors a soldier who kept the city safe using barrels of exploding gunpowder, losing his life in the process.

Caves famous for the dragon-slaying saint who lived there.

Where royalty waits in the height of luxury.

A collection of biblical memorabilia.

A rare tour of an aristocrat's private home reveals valuable 17th-century paintings from artists like Rembrandt.